new information on the incident in boston with the fbi, state and local law enforcement all appealing to the public, asking for any amateur video and photographic evidence that can aid in what now has become a massive investigation. >> we are in the process of securing and processing the most complex crime scene that we've dealt with in the history of our department. we are doing that under the direction of the fbi and in partnership with the atf. jenna: not insignificant that he says that the most complex investigation in their department's history. despite a variety of different reports that you've all heard over the last 24, nearly 24 hours, the commissioner is making it very clear that right now no one is in custody in connection with these attacks. >> we still do not know who did this or why, and people shouldn't skwrupl top conclusions before -- jump to conclusions before we have all the facts you about. make no mistake, we will get to the bottom of this. and we will find out who did this. we'll find out why they did this. any responsible individuals, any responsible groups will